Compression-coupling.



W. S. BURGESS.

COMPRESSION cournme.

APPLICATION FILED JAN. 13, 1908. 906,099, Patented Dec. 8, 1908.

W a M 9 N H W 6 vi. 5 M

mzems'edseparate structure.

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WALTERS. BURGESS, OF CHICAGO, ILLINOIS.

commission-confirms.

rod to any dpsired structure, or sections of a pipe or of a. rod to each other, without the usenf soldered or brazed joints, which will be a simple, strong and relatlvely cheap in construction; by means of which the-coupling or union may be quickly and conveniently made; and which will be effective for its designed purpose, forming a strong and secure oint.

T0 effect these ends, a union or coupling of my invention comprises the various features, combinations of features and details of construction hereinafter described and claimed.

In the'accompanying drawings, in which vmy invention is fully illustratedFigure l is a sectional view of a union of my invention, shown as applied for connecting a pipe to-a Fig. 2 is a sectional view of a coupling embodying my invention, shown as applied forconnecting sections of a pipe to eac other; and Figs. 3 and 4 are sectional views of modified forms of coupling embodying my invention.

Referring now articularly to Fig. 1 of the drawings, in whic my invention is shown as embodied in a union adapted for connecting a pipe 1 to any desired structure, represented at 2, as the wall of a tank or reservoir, 3 designates a bushing ermanentlysecured in the structure 2 as slibw'n by means of a pipe thread 4 screw threaded into a corresponding opening in said structure 2. Formed through said bushing 3,-is a hole or opening 5 of the same size as the bore of the pipe or tube 1. At its outer end, said hole or 0 ening 5 is enlarged to a' size slightly larger t an the exterior diameter of said pipe or tube 1, as shown at 6, thus forming a recess having a shoulder 7 at'its inner end against whichthe end of the pipe 1 is intended to abut and which defines the desired position of said relative to the members of the union.

pi e

Ilaced over the end of the pipe or tube 1 is a tapered sleeve or ring 8', of suitable ductile material, as brass or copper, the small end of Specification of Letters Patent. Application filed January 13, 1908. Serial No. 410,520.

Patented Dec. 8, 1908.

which is. disposed towards the en drofi'said pipe or tube which is designed to be inserted 1nto the bushing 3, the relation being such thatthesmall end of said sleeve or ring8 will enter the open end of the recess 6 "in said bushing a short distance, sayfrom 1/32 to 1/16 of an inch before the taperedsurface thereof contacts with the edges of said recess 6. In order to prevent the edges of said recess 6 from cutting into the surface of the sleeve or ring 8, the edges of said bushing around the open end of said recess are preferably rounded or chamfered, as shown at 9.

The small end of the tapered sleeve or ring 8 is adapted to be forcedinto the opening 6 by means of a recessed nut 10 screw t readed to the outer end of the bushing 3, the inner.

end of which is adapted to abut or bear against the lar e end of said sleeve or ring 8.

To provide or conveniently screwing the bushing 3 into the structure 2 and'for tightwith a hexagonal section 11 an the exterior surface 12 of said nut is made hexagonal, in-

order that they may be grasped by a Wrench. In order that said sleeve or ring 8 and the nut 10 may move freely along the pipe or tube 1, regardless of slight variations in the diameter thereof, the holes or openings in said sleeve ening the nut 10, said bushin is provided or ring and in said nut through which said "pipe or tube passes, are preferably made slightly larger than the exterior diameter of said pipe or tube. In the case of the sleeve or ring 8, this difference will be slight, say 5/1000 of an inch, but in the case of the nut 10, it may be greater, the only limitation being that a sufficient shoulder be left at the inner end of said nut to afford a proper bearing for the end of said sleeve or ring 8.

In connecting the union, the nut 10 and sleeve or ring 8 are first laced over the end 'of the pipe or tube 1. he end of said pipe 1s then inserted into the open end of the bushing 3 until the end thereof abuts against the shoulder 7 at the end of the recess 6 therein. The thread of the nut 10' is then engaged withthe thread on the bushing 3 and said nut is screwed up until the small end of the sleeve orring 8 is forced into strong engagement with the rounded edge 0 at the outer end of the recess 6 in said bushmg 3, said nut 10 being preferably turned or set up until the pressure on said tapered sleeve or ring 8 1s suflicient to cause the rounded edge 9 of the bushing 8 to swage an ,mterior bead on said sleeve or ring 8,1which will in turn swa e a corresponding groove in the external su ace of the pipe or tube 1, as shown at 13. Said bead emg interlocked with said groove, will operate in an obvious formation of the interlocking bead and groove 13.

A coupling of my invention, which, as shown in Fig. 2, is a plied for connecting the sections 1 and 1 o a pipe to each other, may be described, generally, as a mere duplication of the union shown in Fig. 1 and heretofore described, com rising a member 3 provided with an axia hole or opening 5 of substantially the interior diameter of the pipe sections 1 and 1 said hole or opening 5 being enlarged at both ends to a size slightly larger than the external diameter of the pipe sections 1 and 1 thus forming recesses 6 having interior shoulders ,7 at their inner ends, which define the desired ositions of the pipe sections 1 and 1, relatively to the members of the coupling. Placed over the ends of the ipe sectlons 1 and 1 are tapered rings or s eeves 8 the small ends of which are adapted to be forced into the ends of the recesses 6 in the member 3 by means of recessed nuts 10 threaded to the opposite ends of said member 3 with the inner ends of said recesses abutting or bearing against the large ends of the sleeves or rings 8 The member 3 comprises a hexagonal section 11 and the exterior surfaces 12 of the nuts 10 are'made hexagonal to provide for conveniently grasping the same with a wrench. I I

By forcing the tapered sleeves or rings 8 I against the rounded edges 9 at the outer ends of the recesses 6 in the member 3 said sleeves 8 and the pipe sections 1 and 1 may be swaged to form interlocking beads and grooves shown at 13 While I consider the form of union or coupling shown in Figs. 1 and 2 as embody sections 15 and 16 of a ipe or wire to each other, comprises a mem er 17 formed integral with the opposite ends of which are tapered sections 18 and 19, which correspond to the sleeve or ring 8 Fig. 2.

The member 17 and the tapered end portions'I-Sand 19 thereof are provided with a longitudinal hole or opening adapted to the member 27 bein receive the parts 15 and 16 to be connected or coupled, and threaded to the ends of the members 17 are recessed members 20 and 21, which are provided with holes or openings 22 of such size that thesmall ends of the tapered end portions 18 and 19 of the member 17 will entersaid holes or openings a short distance so that the edges of said holes or openings will engage the tapered surfaces of said sections 18 and 19 a short distance from their small ends, the edges of said holes or openings designed to contact w1th sa1d Itapered sections 18 and 19 being preferably rounded or chamfered, as shown at 23, in order that they may not cut said tapered sections. 18and 19. I

By screwing up the members 20 and 2,1, the rounded edges 23 of the holes or openings 22 therein will 0 erate to swage interior beads on the tapere end sections 18and 19 of the member 17 and corres onding grooves on the members 15 and 16, w icli it is desired to connect, with which said beads will interlock, thus securing said members 15 and 16 against endwise movement relatively to the members of the coupling, all substantially in the manner heretofore described in connection with the preferred form of the device.

The modified form of union orcoupling shown in Fig. 4 as applied. for connecting the sections 24 and 25 of a pipe or wire to each other, comprises members 26 and 27,

suitable recess fol-me in the member. 26.

Placed over the ends of the members 24 and 25 to be connected, is a sleeve comprising oppositely tapered sections 28 and 29, the small ends of which are respectlvely adapted to engage the rounded edges 30 and 31 of a hole or openin 32 in the member 26 and of a recess 33 in t e member 27.

With this construction, it is obvious that when the members 26 and 27 are screwed up, the engagement of the rounded edges 30 and 31 on the members 26 and 27 bearing against the tapered surfaces of the sleeve sections 28 and 29-, will operate to swa e said sleeve inwardly, formin interior bea( s on said sleeve and correspon ing rooves in the members 24 and 25 with w 'ch said beads will interlock, thus securing the connected members 24 and 25 against endwise movement relatively to the members of the coupling, substantiall as in the preferred form of the device and in the manner desired.

' It will be observed that it is especially desirable that the metal of the tapered locksleeve shall be of such hard character that when the coupling-members are screwed hard together the .mam body of the sleeve shall not be distorted but shall retain its original shape inorder that-it shall at all times firmly screw threaded to a.

couplintg-member and thus insure the tapered edge 0 the sleeve being jammed directly and positively into the entrance-end of the internal couplingemember. It is desirable also that the metal of this lock-sleeve be of such bendable character that when it is thus jammed hard into locking position its forward thinned ed e shall be bodily bentinwardly all arounr to form an annular bead which may form its own interlockingannular seat or groove in the coupled member.

It is preferable also, in order that this inter.

locking action'shall take place inthe easiest and most effective manner, that the inner corner only of the entrance-end of the coupling-member shall bear u on the sleeve and that this point of contact e near the thinned edge of the sleeve, so that when the jamming action takes placethe thinned extremity, and that portion onl of the sleeve shall be bent sharply inward y into the body of the cou led member.

O viously, my improved union or-coupling is equally ada ted for connecting or coupling a wire or ca le to any desired structure or sections of a rod to each other, as for so connecting a pipe or the sections of a pipe.

I claim 1. In a coupling, the combination of coupling members rovided with openings to receive the mem er to be coupled, means for forcing said coupling members together, a ta ered sleeve of strong ductile material a apted to be placed over the members to be coupled between said coupling members, one of said coupling members being provided with an opening ada ted to receive the small end of said tapered s eeve, said opening being slightly larger than the small end of said tapered sleeve so that the tapered surface of said sleeve will bear first against the edge of,

said opening at a short distance from its small end, whereby said ductile sleeve may be swaged inwardly to form a bead on said sleeve and a corresponding groove in said member to be coupled, with which said bead will interlock, thus securing said coupled member against movement relatively to the members of the coupling. I

2. In a coupling, theeembination of coupling'members rovided with openings to receive'the mom or to becoupled, meansfor forcing said coupling members to ether, and

a tapered sleeve of strong ducti e material placed over the member to be coupled with its large end abutting against a' rigid part of one of said coupling members, the other of said cou members being provided with a recess sight y larger than the small end of said tapered sleeve, so thatthe tapered surface of said sleeve will bear against the edge of said recess a short distance from its small 3. In combinat1on,-a palr of tubular coupling-members threaded one into the other,

the inner end of the inner coupling-member being annularly recessed and shouldered to receive the end of the member to be coupled, and a hard-metal sleeve inclosed within the OOIfiPllIIg-IIIGIDbBIS and tapered longitudina y to a bendable annular edge, the larger end of this sleeve abutting against the outer coupling-member and. the thin tapered edge entering 'the recessed entrance end of the other member and having contact only with the inner annular corner thereof,'for the purpose set forth.

A. In combination, a pair of tubular coup. lings and means for adjustably connecting them, one of the.couplings being provide with an internal shoulder against which the coupled member abuts and with a flaring entrance end, and a hard-metal sleeve ta ered forwardly to a thin bendable edge the arger end of this sleeve having abutment against one of the coupling members and its tapered "end extending into the flared mouth of the other member and having an annular contact near its tapered end with the flared entrance end aforesaid, whereby when the coupling-members are drawn hard together the said thin bendable edge of the sleeve will be swaged inwardly to form an inwardly extending annular bead and a similarly shaped groove in the coupled member.

In testimony, that I claim the foregoing as my invention, I affix my signature in presence of two subscribing witnesses, this 10th day of January, A. D. 1908.

WALTER s. BURGESS.

Witnesses:

F. MOMELES, WILLIAM G. NoYEs. 

